Nostalgic Warehouse Victorian Plate with Keyhole Black Porcelain Knob, Single Dummy, Antique Brass Traditional mounting for vintage or new doors. Single Dummy Knob. Coordinates with Nostalgic Warehouse's Premium Grandeur line For use on interior doors that require only a push/pull function. Mounts directly to door. Mortise lock versions available for vintage doors 3-Year mechanical and finish warranty